April in Pangkalan Bun is the rainiest month of the year. In April, the weather in Pangkalan Bun is typically hot. Average daily high temperature in April is about 31 degrees above zero. On average, Pangkalan Bun has 29 rainy and 1 cloudy day in April. The rains are usually heavy. April as well as January, February, March, and May is considered the most uncomfortable time to visit Pangkalan Bun.